Stereotyper s saw



(No Model.) G. E; LLOYD.

STEREOTYPERS SAW.

No. 375,369. Patented Dec. 27, 1887..

. \k H z J 0% 4/ W/T/VESSES: IIVI/E/VTOR BYJHA/H/IK ATTORNEY UNITED STATES PATENT OFFICE.

GEORG E. LLOYD, OF CHICAGO, ILLINOIS.

STEREOTYPERS SAW.

SPECIFICATION forming part of Letters Patent No; 375,369, dated December 27, 1887.

Application filed April 12, 1886.

Serial No. 198,527; (No model.)

To aZZ whom it may concern:

Be it known that I, Gnone E. LLOYD, of Chicago, Cook county, Illinois, have invented certain new and useful Improvements in Stereotypers Saws; and I do hereby declare that the following is a full, clear, and exact description of the invention, which will enable others skilled in theart to which it appertains to make and use the same, reference being had to the accompanying drawings, and to letters of reference marked thereon, which form a part of this specification.

' and bases.

My invention relates to stereotypers saws, especially adapted to cutting an oblique kerf in the engaging-surfaces of stereotype plates This I accomplish by a saw projecting obliquely through a suitable opening in the bed of the table-frame, said saw being mounted on a shaft journaled in the oscillating end of a frame placed at an angle to the bed of the table-frame and at right angles to the periphery of the saw. v

In the drawings, Figure 1 is a side elevation of my invention. Fig. 2 is an end elevation. Fig. 3 is a plan view of the bed; and Fig. 4 is a plan view of the oscillating frame, in bearings in the ends of which the shaft carrying resting on four legs.

the saw is journaled.

Reference being had to the drawings, A represents a table-frame, of rectangular shape, Held in bosses at a, re spectively, made integrant or secured to a leg of the table-frame and the side rail of the same on the same vertical plane therewith, is the stationary shaft B. Fulcrumed on this shaft B are the knuckles c c of the oscillating frame 0. This frame 0 consists of two parallel arms projecting in the same direction from the knuckles c c, which have bearings d d in their free ends and are connected by suitable crossbars. Journaled in the bearings d is the shaft D, having a flanged pulley, f, on its lower end, through the medium of which and suitable belting it is actuated. On the upper end of shaft D is mounted, in the usual way, a circular saw, E, a segment of the periphery of which projects obliquely through a corresponding slot, 6, of suflicient width.

In order to make the kerf of the saw deeper or shallower, as the case may require, I provide a suitable vertical opening, preferably in the center of the outer cross-bar of frame 0, and pass down through it a screw, G. This screw is swiveled or otherwise secured to the undersurface of the bed of the table-frame, and is provided with two set-nuts, one of which is placed below said frame 0 and the other above. Thus by manipulating said nuts said frame 0 can be adjusted so as to project the periphery more or less above the plane of the bed of the table-frame A.

It is often found convenient to give a slight lateral adjustment to the saw in the slot 6 in the bed of said table-frame. To do this I screw-thread the upper end of the stationary shaft and place inside of the upper knuckle, c, a nut, h. By manipulating this not It a slight lateral adjustment of the saw can be obtained.

g 9 represent two guide-pulleys, which are looselyjournaled on a spindle rigidly held in the extremities of a couple of arms projecting from a plate secured in or to the side of the table-frame, as shown. These pulleys g are intended to direct the belt from the main shaft to pulleyf. Pulleys 9, however, can be dispensed with.

It will be understood that, in order to cut a straight kerf in the engaging-surfaces of the stereotype plate or base, some guide must be furnished. This I provide for by making a longitudinal groove, b, the obverse of the tenon of the base in cross-section, and-which is made in the bed in alignment with slot e. Thus, when making a slot in or trimming the sides of the tenon of the base, the base is inverted and the tenon placed and moved longitudinally in said groove 1). In order to guide the work, whether one, two, three, or more columns of stereotype plates and bases are being operated on, I make a gage-bar, H, which extends across the bed of frame A, parallel to slot 6, and provide a series of vertical perforations in or near each end. These series of perforations in bar Hare made and located with reference to a series of corresponding perforations, It It, in the bed. By passing pins down through certain perforations in the bar H into corresponding perforations, k, in the bed, I can make an incision in the first, second, third, or other'colurnn of the work. An-

other way of holding the gage-bar H in post tion, which can be used in conjunction with the means just described, or used alone, eonsists of extending the ends of the gage-bar beyond the edges of the bed of frameA and providing them with downwardly-proj ecting lugs. The inner vertical surface of one of these lugs is preferably inversely beveled, and the other is provided with a set-screw, i, passing laterally through it and impinging against the adjacent edge of the table-frame, thus clamping the bar H in position.

It is obvious that frame 0 may be pivoted on a stationary shaft fixed at any angle to the bed. I therefore do not wish to be confined to any particular angle. Vhile I prefer frame 0 to be capable of oscillation, it may, if desired, be made permanent. If this latter construction is adopted, the screw G and nuts thereon would be dispensed with.

If desired, the devices for adjusting the saw laterally may be dispensed with. I prefer their use, however.

IVhat I claim as new is 1. In a stereotypers saw, the combination, with the supporting-frame having a bed with a longitudinal slot passing obliquely through it, of a circularsawprojcciiug up through said slot, a shaft on which said saw is mounted, and a frame, in the ends of which said shaft is journaled, which is inclined at right angles to the plane of the periphery of said saw.

2. In a stereotypers saw, the combination, with the supporting-frame having a longitudinal slot passing obliquely through the bed thereof, of a circular saw projecting up through said slot, a shaft on which said saw is mounted, and an oscillatory frame, in the free ends of which said shaft is journaled, and means for accomplishing oscillatory movement.

3. In a stereotypers saw, the combination, with the supporting-frame having a longitudinal slot passing obliquely through the bed, of the circular-saw shaft, on which said saw is mounted, provided with a screw-thread between said saw and the adjacent bearing thereof, a nut, and the oscillating frame inclined at right angles to the plane of the periphery of said saw, in the free ends of which said shaft is journaled.

4. In a stereotypers saw, the combination, with the supporting-frame and saw projecting through the bed thereof, of the gage-bar H, having a series of perforations near each end, and pins adapted to pass through said perforations and into correspondiugly-arranged up 0 ertures, k, in the bed, whereby the gage-bar is adj ustabl y held relatively to the saw, said apertures and perforations being arranged to suit the various number of columns of stereotypeplates to be operated upon, substantially as set forth.

5. In a stercotypers saw, the combination of the saw, the supporting-frame having a bed provided with a slot through which the saw projects, and a groove, 1), in alignment with the saw, and the slot through which it projects adapted .to receive the tenon on the stereotype-plate, and thus guide the same, substantialiy as set forth.

G EORG E. LLOYD.

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